import SwiftUI

struct WatchConfigGarminView: View {
    @ObservedObject var state: WatchConfig.StateModel

    @State private var shouldDisplayHint: Bool = false
    @State var hintDetent = PresentationDetent.large
    @State var selectedVerboseHint: AnyView?
    @State var hintLabel: String?
    @State private var decimalPlaceholder: Decimal = 0.0
    @State private var booleanPlaceholder: Bool = false

    @Environment(\.colorScheme) var colorScheme
    var color: LinearGradient {
        colorScheme == .dark ? LinearGradient(
            gradient: Gradient(colors: [
                Color.bgDarkBlue,
                Color.bgDarkerDarkBlue
            ]),
            startPoint: .top,
            endPoint: .bottom
        )
            :
            LinearGradient(
                gradient: Gradient(colors: [Color.gray.opacity(0.1)]),
                startPoint: .top,
                endPoint: .bottom
            )
    }

    private func onDelete(offsets: IndexSet) {
        state.devices.remove(atOffsets: offsets)
        state.deleteGarminDevice()
    }

    var body: some View {
        Form {
            Section(
                header: Text("Garmin Configuration"),
                content:
                {
                    VStack {
                        Button {
                            state.selectGarminDevices()
                        } label: {
                            Text("Add Device")
                                .font(.title3) }
                            .frame(maxWidth: .infinity, alignment: .center)
                            .buttonStyle(.bordered)

                        HStack(alignment: .top) {
                            Text(
                                "Lorem ipsum dolor sit amet, consetetur sadipscing elitr."
                            )
                            .font(.footnote)
                            .foregroundColor(.secondary)
                            .lineLimit(nil)
                            Spacer()
                            Button(
                                action: {
                                    hintLabel = "Add Device"
                                    selectedVerboseHint = AnyView(Text("Add Garmin Device… bla bla bla"))
                                    shouldDisplayHint.toggle()
                                },
                                label: {
                                    HStack {
                                        Image(systemName: "questionmark.circle")
                                    }
                                }
                            ).buttonStyle(BorderlessButtonStyle())
                        }.padding(.top)
                    }.padding(.vertical)
                }
            ).listRowBackground(Color.chart)

            if !state.devices.isEmpty {
                Section(header: Text("Garmin Watch")) {
                    List {
                        ForEach(state.devices, id: \.uuid) { device in
                            Text(device.friendlyName)
                        }
                        .onDelete(perform: onDelete)
                    }
                }.listRowBackground(Color.chart)
            }
        }
        .sheet(isPresented: $shouldDisplayHint) {
            SettingInputHintView(
                hintDetent: $hintDetent,
                shouldDisplayHint: $shouldDisplayHint,
                hintLabel: hintLabel ?? "",
                hintText: selectedVerboseHint ?? AnyView(EmptyView()),
                sheetTitle: "Help"
            )
        }
        .navigationTitle("Garmin")
        .navigationBarTitleDisplayMode(.automatic)
        .scrollContentBackground(.hidden).background(color)
    }
}